We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
SUPCO IG403K hot surface igniter flat silicon carbide element with hardware kit

SUPCO

SUPCO IG403K Hot Surface Igniter 120V LP NG

SKU CH-GFQY-5QNZQ

A 120 V silicon-carbide hot-surface igniter with hardware kit for natural-gas and LP furnaces

  • Silicon carbide element resists thermal shock
  • 120 V AC rating suits standard furnace supply
  • Flat 3-1/4 in profile fits common burner brackets
  • NG/LP dual-fuel rating covers both gas types

SUPCO IG403K Hot Surface Igniter 120V

The SUPCO IG403K hot surface igniter replaces worn or failed ignitors in residential gas furnaces and boilers. It operates on 120 V AC and supports both natural gas and LP fuel supplies. The flat silicon carbide element measures 3-1/4 inches in overall length. A hardware kit is included for straightforward installation.

Thermals noise and power draw in normal use

The silicon carbide element heats rapidly to ignition temperature when 120 V is applied. Current draw remains within the design limits of standard furnace control boards during the heating cycle. No moving parts or fans are present so the igniter operates silently. The component is built to withstand repeated thermal cycling in typical heating equipment.

How it compares

Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 79% of the 1,762 comparable items (median $45.99).

Specifications

Product
Brand nameSUPCO

Questions about this item

How do I install the SUPCO IG403K hot surface igniter and what step is commonly missed?

Shut off power and gas, remove the old igniter, mount the new flat silicon carbide unit using the included hardware kit, then restore power; the step often missed is handling the element with bare hands, which leaves oils that cause premature failure.

What maintenance or replacement will the SUPCO IG403K need later?

The 120 V silicon carbide igniter is a wear part; plan to replace it when the furnace fails to light or the element shows visible cracks, typically after several heating seasons of normal use.

More in Heating & Cooling Controllers

Similar items